EP 1537162 A1 20050608 - METHOD FOR PRODUCING TETRAHYDROFURANE COPOLYMERS
Title (en)
METHOD FOR PRODUCING TETRAHYDROFURANE COPOLYMERS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON TETRAHYDROFURAN-COPOLYMEREN
Title (fr)
PROCEDE DE PRODUCTION DE COPOLYMERES DE TETRAHYDROFURANE
Publication
Application
Priority
- DE 10239947 A 20020830
- EP 0308406 W 20030730
Abstract (en)
[origin: WO2004020499A1] The invention relates to a method for the single-stage production of polyoxylalkylene glycols by the copolymerisation of tetrahydrofurane and alpha, omega diols in the presence of a heteropoly acid and a hydrocarbon. The invention is characterised in that a mixture of water and said hydrocarbon is eliminated by distillation from the copolymerisation.
IPC 1-7
IPC 8 full level
C08G 65/28 (2006.01); C08G 65/20 (2006.01)
CPC (source: EP KR US)
C08G 65/20 (2013.01 - EP KR US); C08G 65/26 (2013.01 - KR); C08G 65/2696 (2013.01 - KR)
Citation (search report)
See references of WO 2004020499A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004020499 A1 20040311; AU 2003251667 A1 20040319; CN 1276000 C 20060920; CN 1678659 A 20051005; DE 10239947 A1 20040311; EP 1537162 A1 20050608; JP 2005536615 A 20051202; JP 4327724 B2 20090909; KR 100970039 B1 20100716; KR 20050037590 A 20050422; MY 135604 A 20080530; TW 200406438 A 20040501; TW I328015 B 20100801; US 2006167321 A1 20060727; US 7094933 B2 20060822
DOCDB simple family (application)
EP 0308406 W 20030730; AU 2003251667 A 20030730; CN 03820218 A 20030730; DE 10239947 A 20020830; EP 03790835 A 20030730; JP 2004531836 A 20030730; KR 20057003192 A 20030730; MY PI20032973 A 20030806; TW 92119973 A 20030722; US 52455505 A 20050214